Newspaper-core-stripping machine



g F. MURRAY NEWSPAPER CORE STRIPPING MACHINE Filed May 10. 1926 2 Sheets-Sheet 1 Aug. 23,1921

. 1,640,090 F. MURRAY NEWSPABERCORE STRIPPING MACHINE Filed May 10, 1926 2 sheets-shes; 2

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I 4 fl g Patented Aug. 23, 1927.

UNITED STATES,

FRANK MURRAY, 0]? LOS ANGELES, CALIFORNIA.

NEWSPAPEBr-OOBE-STBIPPiNG maonmn.

Application filed May 10, 1926. Serial No. 107,993.

My invention is a newspaper core stripping machine to strip the paper from the core or mandrel on which it is rolled, the part stripped being the residue left on the aii'ter surlicient has been unrolled for printing. I

In the printing art in which paper is taken cit a. roll by unrolling same, particularly in newspaper work, there is a certain amount of paper left wrapped on the core or mandrel. For -various reasons well understood in the printing art it is not advisable to completely slrii the paper from the core in printing operations. It is generally the practice of printing companies, especially the large pub- 'lishers, to return the cores to the paper manufacturers and the paper remaining on-the core is usually cut or stripped off before making the return shipment. My machineis designed to do this stripping.

An object of my invention is a stripping machine for forming a longitudinal cut in the paper on the cores and to do this without substantial injury to the core, and moreover to accommodate the machine to various thicknesses of paper on the core in accordance with the degree to which the paper has been unrolled in the printing operation.

Another object of my invention is to cut the paper longitudinally by a rotary sharp edged disc cutter and to support the cores on a resiliently mounted conveyor to maintain a yielding pressure between the core with the paper thereon and the cutting knife. p

A further object of my invention is to utilize conveyors for the core whereby the action of the cutting knife itself causes the traversing of the core underneath. the cutter, it being merely necessary to give the core with the paper thereon an initial impulse.

A further detailed object of my invention is an arrangement for adjustin the spacing of the conveyor and the cuttlng disc and regulation of the resilient pressure thrusting the core against the cutting disc.

In constructing my machine I employ a suitable frame and mount a conveyor table in same, such table being pivoted atone end and being resiliently supported at the other end adjacent the cutting disc. The table is provided with freely rotatable rollers on which the cores may be placed. A cutting disc is mounted on a fixed axis and preferably driven directly by an electric motor or the like. The disc is preferably vertical and of rollers space directly over the track formed by the rollers.

A suitable rack is positioned over the conveyor table in which asupply of cores with paper thereon may be laced. The first core is given an impulse w ich thrusts same underneath the cutting disc, the lower edge of which runs in the proper direction to feed te core lengthwise, slitting the paper from the core from one end to the other and without injury to the core. As soon as one core is fed through, another rolls into place and as the rollers are rotating, carry such core and the succeeding ones underneath the cutting disc. The cores with the paper slitting lengthwise thereon are caught on receiving brackets and may then bemanually removed.

M invention will be more readily understoo' from the following description and drmvings, in which;

Figure 1 is a plan of the machine;

Fig. 2 is a front elevation taken in the direction of the arrow 2 of Fig. 1;

Figure 3 is a vertical transverse section on the line 33 in the direction of the ar-- rows.

The stationary part of the machine is con- I structed substantially as follows:

The frame is designated generally by the numeral 1. Suitable pairs of legs 2 and 3 support the opposite ends of the cutting machine proper, having a lower longitudinal horizontal brace 4 and upper longitudinal bars 5, these being illustrated as angles fitting over the top of the legs. An angular bracket 6 is constructed on the back end of themachine, having upstandin lugs 7 to which is pivoted the conve or ta 1e 8. This table is formed with a pair of longitudinal angles 9 in which are journaled the axles 10 having a series of rollers 11 thereon. These rollers are freely rotatable and are spaced a proper distance apart to accommodate the smallest and largest core with paper thereon which is apt to be used. The cutter arrangement is substantially as follows:

A cutting disc 12, sharpened at the edge, is mounted on an arbor 13, this being preferably directly connected to the shaft 14 of an electric motor 15. The motor is mounted on a fixed base 16 and held immovable. A protec tive hood 17 is placed over the upper edge ofthe cutting disc. It will be noted that adjacent the cuttin disc there are several sets closer together than the other rollers of the conveyor.

A. storing rack designated generally by the numeral 18 is constructed with longitudinal bars 19 mounted on supporting posts 20 and 21 on the front and back of the machine. Upper inclined rack strips 22 extend from the upper bar 19 backwardly and downwardly and terminating short of.

the back of the machine, that is, in front of the posts 21. Lower rack strips lead forwardly from the rear posts, incline downwardly, terminating at substantially the edge of the innermost rollers.

The resilient mounting for the conveyor is substantially as follows:

A cross plate 2a is secured to the angles 9 of the conveyor table 8, preferably at a position towards the forward end of the machine and forward of the cutting disc. This plate is illustrated as provided with a pair of ears 25 to which are pivotally connected a link 26, this link being attached to a lever 27 having a pivotal mounting 28 on a cross bar 29 secured to the legs 3. The free end of the lever 27 has a stirrup 30 connected thereto, adapted to be engaged by a persons foot. A plate having a series of perforations 32 at different elevations is secured in a fixed vertical position in the machine, being preferably attached to a cross brace 33 at the bottom and a cross brace 3% at the top.

The lever 2'7 is formed with an elongated slot 35 by which a pin inserted through any of the apertures 32 may hold such lever in any desired position; thus regulating the position of the conveyor table.

The spring mounting is substantially as follows, having reference particularly to Figs. 2 and 3:

Fixed angular brackets 3'? are secured on opposite sides of the machine, being preferablv attached to the longitudinal bars 5. Adjustable bolts 38 extend through these brackets and through the ends of the cross plate 24. Compression springs 39 are coiled around these. bolts and positioned between the brackets and the plate 2e. These bolts by means of the nut 40 allow adjustment as follows:

,Presuming by means of the stirrup 30, the lever 27 has been moved to the desired position, so that the table is the proper distance from the cutting disc in accordance with the cores to be stripped, and secured in such position by the pin 36, the bolts are then adjusted so that the heads ll are drawn snugly against the cross plate 24 and the nuts 40 snugly against the brackets 37.

Thus when the pin 36 is removed from the apertures 32, the springs 39 cannot shove the cross plate 24 upwardly, hence the conveyor table with the rolls cannot be elevated above the position desired. however, when cores are passed through the machine on the rollers underneath the cutting disc,

the adjustment will be such that the table will be slightly depressed. Due to the initial compression of the springs and the addi tional pressure by the depression of the conveyor table at the end underneath the cutter, the cutting disc is forced through the paper wound thereon, but the pressure is insutl'lcient to cause the cutter to injure the core.

A receiving bench designated generally by the numeral 42 is constructed with lugs i3 and longitudinal top rails 44, these being secured to the legs 43 and the leg 3 at the main table, and if desired, being connected to brackets d5 connecting the bars a and 5. Inverted V-shaped brackets 46 are spaced longitudinally of the machine to catch the cores as they are discharged from the end roll of the conveyor. At the back of the machine are provided U-shaped ari'ns ll in in which the cores with the slit paper still unremoved therefrom may be manually placed to clear the machine.

A stop board l8 prevents the stripped cores from being thrown too far on discharge of same from the machine.

In orderto initially start the machine a starting lever 4C9 is pivoted at the back end of the machine, preferably on a pivot 50 extending transversely across the legs 2. A

spring 5i normally holds the starting lever in the position shown in Fig. 2, with the striking end 52 drawn towards the back part of the machine. By operating a pull cord 53 which is attached to the lever 49 and extends along the machine, the operator may swing such lever; thus striking the end of a core resting on the rollers and thrusting same into engagement with the cutting disc. This disc rotates in such a direction that the cutting edge draws th cores from the back to the forward end of the machine with considerable rapidity. This starts the rollers on the conveyor rotating so that the cores positioned on the lower rack strips 23 shown dotted in Fig. 3, when feeding on the rollers, will be carried underneath the cutting disc.

Should this supply of cores in any manner stick, theymay be fed transversely by a feeding lever or series of levers 54 pivoted adjacent the upper part of the machine and having a lower free end 55 connected to a cord 56. This cord leads over an eye or pulley and extends along the machine to a convenient position for operation. If a plurality of levers 54; are used, a rod 58 will be utilized connecting same together. A cord may then be connected to said rod.

From the abov description it is believed that the operation of my machine will be understood, however it may be stated in brief that some of the essential features are mounting the cutting disc in a relatively fixed posit-ion having the conveyor rollers mounted on a frame or table structure pivoted at one end, this end beingdistant from the cutting disc, having an adjustable stop mechanism by which the elevation of the rollers and conveyor table may be adjusted so that same cannot rise above the designated level, and having the resilient arrangement by which the conveyors may be depressed when cores pass underneath the cutting disc.

It will be noted that when the cores are thick, that is, having a considerable layer of paper thereon, that the compresslon springs 39 are compressed to a greater extent than when the cores are thin. This however is an advantage as it forces the cutting disc through the paper.

It may be stated that the paper appears to have an abrading action on the cuttlng disc or knife, maintaining same continually in a sharpened condition suificient to slit the paper, but insufficient to mar thecores In the above description of my invention I have not designated the same as being constructed in any particular dimensions, but 1t will be understood that these may be proportioned to the length of the cores to be stripped. I

Various other features both n general construction and in specific details maybe altered to suit different requirements or installations. Such changes however, would be within the spirit of my invent on as set forth in the description, drawings and claims.

Having described my invention, what I claim is:

1. A core stripping machine compris ng in combination, a single rotary cutting disc, a conveyor having a series of rollers to support a core, and means to rotate the cutt ng disc, said disc forming a means for movlng the core longitudinally in relatlon to said disc.

2. A core stripping machine comprising in combination, a resiliently mounted table having a series of conveying rollers mounted on fixed axes on the table, a cutting disc having a fixed mounting positioned to engage a core on the table, and means to rotate the disc, said disc formlng means to move the core longitudinally.

3. A cor stripping machine compris ng in combination a conveying table having a series of rollers positioned lengthwise thereof, a pivotal connection for one end of the table, a resilient support for the other end of the table, and a rotary cutting disc mounted in a relatively fixed position above the table.

4. A core stripping machine as claimed in claim 3, having in addition means to adjust the height of the table relative to the cutting disc. 7

5. A core stripping machine comprising in combination a suitable framework, a conveying table pivotally mounted at one end in the frame, a spring operatively connected between the other end of the table and a fixed part of the frame, a seriesof rollers positioned lengthwise of thetable, to convey cores lengthwis of such table, and a cuttin disc mounted above the table to cut longitudinally of cores travelin thereunder.

6. A core stripping machine as claimed in claim 5, having in addition means connected to the conveying table to raise and lower same relatively to the cutting disc, and means to adjust the springs to prevent their upward action beyond a fixed limit.

7. A core stripping machine comprising in combination a rotary cutting disc mounted in a relatively fixed position, a conveyor means to carry cores lengthwise underneath said disc, means to adjust said conveyor to the desired elevation, resilient means allowing depression of the conveyor means.

8. A core stripping machine comprising in combination a rotary cutting dischaving a relatively fixed mount-in a conveyor table positioned in the plane 0 the disc, one end of the table being pivotally mounted, means to adjust the height of the table adjacent the disc in any desired position, means to allow depression of such end below the desired position.

9. A core stripping machine as claimed in claim 8, in which the means to allow depression of the table comprises springs connected to the table and a' fixed structure, and the means to limit the elevation of the table com rises adjustable bolts connected to the tab e and to the fixed structure.

10. A core stripping machine comprising in combination a frame, a rotary cutting disc mounted therein in a relatively fixed position, a conveyor table having conveyor means thereon, having one end pivotally connected to the frame, a vertical link connected to the conveyor table, adjacent the disc, means to operate said link to raise and lower the table, means to temporarily hold said table at the desired elevation, bolts to limit the table motion, operatively connected between the table and a fixed structure, and springs tensioned to elevate the table, opera- .tively connected between the table and the fixed structure.

11. A core stripping machine as claimed in claim 10, in which the means to operate the link and the temporary holding means comprises a lever ivoted to a fixed structure and connected to the link, and means to rarily at any desired elevation.

12. A core stripping machine as claimed in claim 10, having in addition a starting device positioned adjacent the pivoted end of the conveyor table, and means to operate same to initially start a core towards the cutting disc.

sition the free end of the lever tempoj 13. A core stripping machine comprising in combination a framework, a rotary cutting disc mounted therein, a conveyor table having conveyor means pivotally connected at one end of the frame and adjustably and resiliently mounted at the other end of the frame adjacent the disc, feeding racks for cores having inclined transverse strips to discharge cores on the conveyor table, and means to receive stripped cores.

14. A core stripping machine as claimed in claim 13, in which the racks comprise an upper rack and a lower rack inclined in opposite directions, the upper rack being po- 'sitioned to receive cores at the front of the machine and drop same on the lower rack at the back of the machine.

15. A core stripping machine as claimed in claim 13, having in addition a core feeding device movable transversely of the core rack, and means to operate same to roll cores towards the conveyor table.

16. A core stripping machine comprising in combination a suitable framework, a rotary cutting disc mounted therein in a relaend thereof, a cross-plate adjacent the other 7 end of the longitudinal bars, a vertical link depending from said cross plate, a lever pivoted to the frame, connected to said link, means to temporarily adjust the lev r in a desired fixed elevation, a pair of brackets connected to opposite sides of the frame, adjusting bolts connected through the crossplate and the said brackets, and compresion springs positioned between said brackets and the said cross-plate.

17. A core stripping machine as claimed in claim 16, in which the means to adjust the elevation of the lever comprises a vertical plate having apertures therein, there being a registering opening in the lever, and a pin to engage the lever through any of the holes.

In testimony whereof I have signed my name to this specification.

FRANK MURRAY. 

